So picked me up 5.1 qt. of Castrol Edge and 1 qt. for my oil change. Noticed the quart bottle was the Older Castrol Syntec, I can't imagine it's a lot different than the Castrol Edge and do you think I should just get 1 qt. of Castrol Edge instead. I can't see where there would be any issues, but I'm the type of guy that like to keep the same oil in my fills. It is the same brand, not sure if it was just re-badged with a different name or the add pack is slightly different.
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